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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_HOST_GCD_REST_CLIENT_H_
#define REMOTING_HOST_GCD_REST_CLIENT_H_
#include <queue>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/clock.h"
#include "net/url_request/url_fetcher_delegate.h"
#include "remoting/base/url_request_context_getter.h"
#include "remoting/host/oauth_token_getter.h"
namespace base {
class DictionaryValue;
} // namespace base
namespace remoting {
// A client for calls to the GCD REST API.
class GcdRestClient : public net::URLFetcherDelegate {
public:
// Result of a GCD call.
enum Result {
SUCCESS,
NETWORK_ERROR,
NO_SUCH_HOST,
OTHER_ERROR,
};
typedef base::Callback<void(Result result)> ResultCallback;
// Note: |token_getter| must outlive this object.
GcdRestClient(const std::string& gcd_base_url,
const std::string& gcd_device_id,
const scoped_refptr<net::URLRequestContextGetter>&
url_request_context_getter,
OAuthTokenGetter* token_getter);
~GcdRestClient() override;
// Tests whether is object is currently running a request. Only one
// request at a time may be pending.
bool HasPendingRequest() { return !!url_fetcher_; }
// Sends a 'patchState' request to the GCD API. Constructs and
// sends an appropriate JSON message M where |patch_details| becomes
// the value of M.patches[0].patch.
void PatchState(scoped_ptr<base::DictionaryValue> patch_details,
const GcdRestClient::ResultCallback& callback);
void SetClockForTest(scoped_ptr<base::Clock> clock);
private:
void OnTokenReceived(OAuthTokenGetter::Status status,
const std::string& user_email,
const std::string& access_token);
void FinishCurrentRequest(Result result);
// URLFetcherDelegate interface.
void OnURLFetchComplete(const net::URLFetcher* source) override;
std::string gcd_base_url_;
std::string gcd_device_id_;
scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
OAuthTokenGetter* token_getter_;
scoped_ptr<base::Clock> clock_;
scoped_ptr<net::URLFetcher> url_fetcher_;
ResultCallback callback_;
DISALLOW_COPY_AND_ASSIGN(GcdRestClient);
};
} // namespace remoting
#endif // REMOTING_HOST_GCD_REST_CLIENT_H_
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